US737123A - Process of producing chlorids of carbon. - Google Patents

Description

No. 737,123. PATENTED AUG. 25, 1903.

- M F. J. MAGHALSKE. PROCESS OF PRODUCING GHLORIDS OF CARBON.

APPLICATION FILED SEPT. 24, 1902 N0 MODEL.

\ mm: PU'ERS no, PHOTO-\IYHO., WASHINGH'N. D r

the sides of the furnace.

- No. 737,- 12e. v

. UNIT D STATES Iatented August 25, 1903.

PATENT OFFICE.

FLORENTINE JOSEPH MAOI-IALSKE, OF CHICAGO, ILLINOIS,-ASSIGNOR OF ONE-HALF TO CHARLES HERBERT LYON, OF CHICAGO, ILLINOIS.

PROCESS OF PRODUCING CHLORIDS OFCARBON.

SPECIFICATION formingpart of Letters Patent N 0. 737,123, dated August 25, 1903. 1 Application filed September 2% 1902. Serial No. 124,658. (No specimens-l To all whom it may concern:

Be it known that I, FLORENTINE J osnrn' MAOHALSKE, a citizen of the United States, and a resident of the city. of Chicago, State of Illinois, have invented a new and useful Process of Producing Chlorids of Carbon, of which the following is a full, clear, and exact description.

According to this process a mixture of carbonaceous substance, a chlorin compound, and an agent which will combine withthe base of the chlorin compound is heated to a high temperature, preferably by means of an electric furnace. The chlorin liberated from its compound combines with the heated carbon, and the resulting carbon chlorid is withdrawn and may be condensed. The preferred charge consists of a mixture of broken coke, sodium chlorid, and silica sand. The charge should be free from water, and a non-oxidizing atmosphere is maintained in the furnace. Various chlorids of carbon may be produced by varying the proportions of the ingredients of the charge.

A suitable furnace for carrying out the process is shown in the accompanying drawin g, in which the figure is a vertical axial section. It is to be understood that this furnace is merely illustrative andthat the process is in no way limited to its use.

The furnace shown comprises a stack 1 of refractory non-conducting material, such as fire-brick, with a lining 2 of magnesia brick. Carbon electrodes 3 3 pass adj ustably through refractory non-conductin g sleeves-in A charging-opening 5, with suitable closure, extends through the top'wall. An outlet-flue 6 for the carbon chlorids rises from the upper end of the furnace. A tap-hole 7 leads from thelower part of the furnace-chamber.

According to the preferred mode of operation a charge 8, consisting of .a. water-free mixture of broken coke, sodium chlorid, and pure silica sand is introduced into the furnace, so as to surround the ends of the electrodes. An electric current is then passed between the electrodes and through the charge, heating the mixture to a temperature sufficient to elfect the reaction. that the high temperature first melts the so- It is probable with the molten chlorid to liberate chlorin, which thereupon combines with the incandes: cent coke to produce the carbon chlorid. The resulting chlorid is delivered through the outlet-flue 6 to a condenser or chamber, andthe molten residue is withdrawn through the taphole. Air should be excluded from the furnace during the operation. 7

Various chlorids of carbon may be produced by varying the proportions of the ingredients of the charge. Typical-reactions may be represented by the followingequations:

Sulfur chlorid may be produced simultaneously with the carbon chlorids by adding sulfur to the charge. A typical reaction in this case may be represented by the following equation:

It will be seen from these reactions that the silica serves -to bind the base of the chlorin compound.

' It will be noted that the charge employed for the production of chlorids of carbon entirely differs from that used for the productionof silicon carbid,in which a small amount of sodium chlorid is usually added to the mixture of carbon and silica to serve as a flux and render the mass porous. In this process the chlorin compound is used in much larger proportion, being a principal ingredient of the charge, as will be seen from the equations represesenting the reactions. The temperature requisite for this process is also lower than that necessary for theproduction of silicon carbid, being below 2,000 centigrade. An electric current of five hundred amperes at a potential difference of sixty volts is sufficient for a furnace of the usual size. The production of silicon carbid re quires, according to Acheson, a temperature above 4,000 Fahrenheit, and, according to dium chlorid and that the silica then reacts Moissan, a temperature sufficient to vaporize carbon and silica.

I claim- 1. The process of producing chlorids of carbon, which consists in heatinga mixture of a carbonaceous substance, a chlorin compound and an agent which will combine with the base of the chlorin compound, to a temperature sufficient to effect the reaction, as set forth.

2. The process of producing chlorids of carbon, which consists in heating a mixture of a carbonaceous substance, a chlorin compound and silica'to a temperature sufficient to effect the reaction, as set forth.

3. The process of producing chlorids of carbon, which consists in heating a mixture of carbon, an alkali chlorid and silica to a temperature sufficient to effect the reaction, as set forth.

4. The process of producing chlorids of carbon, which consists in heating a mixture of carbon, sodium chlorid and silica to a temperature sufficient to effect the reaction, as set forth.

5. The process of producing chlorids of carbon, which consists in heating a mixture of coke, sodium chlorid and silica sand to a temperat u re sufficient to effect the reaction, as set forth.

6. The process of prod ucin; chlorids of carbon, which consists in electrically heating a mixture of carbon, sodium chiorid and silica to a temperature su fiicient to effect the reac tion, as set forth.

Images